Specifications

MedWeld 3000 Catalog Revision 8
July 2002 Page 48 of 72
Model Numbers for 3-Phase Systems
MedWeld 3005 Three Phase to DC
MedWeld 3035 -WTP=1200
MedWeld 3035 -WTP=1750
MedWeld 3035 -WTP=2500
MedWeld 3035 -WTP=3300
MedWeld 3065 -WTP=1200
MedWeld 3065 -WTP=1750
MedWeld 3065 -WTP=2500
MedWeld 3065 -WTP=3300
MedWeld 3075 -WTP=1200
MedWeld 3075 -WTP=1750
MedWeld 3075 -WTP=2500
MedWeld 3075 -WTP=3300
MedWeld 3095 -WTP=1200
MedWeld 3095 -WTP=1750
MedWeld 3095 -WTP=2500
MedWeld 3095 -WTP=3300
Note on Current Monitoring for AC and 3-Phase to DC Controls:
The current transformer coil shown above and throughout this catalog is used on AC
and 3-Phase to DC controls. This device is suited for currents above 50 amperes. For
applications below this level, please consult with WTC and request for the document
entitled “Guidelines to Select a Sensor to Measure Welding Current”.
Additional Three Phase to DC
additonal WTP=1200
additonal TP=1200
additonal WTP=1750
additonal TP=1750
additonal WTP=2500
additonal TP=2500
additonal WTP=3300
additonal TP=3300
Seam Welding with 3-Phase Welding Controls
WTC welding controls provide a load resistor across the welding transformer. This
resistor assures proper SCR firing and transient voltage suppression under all operating
conditions.
The load resistor supplied as standard equipment is designed for spot welding or short
duration seam welding use with a maximum
weld time of 5 seconds and a maximum duty
cycle of 33%. If your welding application involves weld times longer than 5 seconds per
weld or an overall duty cycle exceeding 33%, a larger load resistor is required. Please
contact the factory or your sales representative to obtain the correct load resistor for
your application.